Taguchi Method Analysis With Gas Tungsten Arc Welding of AZ61A Magnesium Alloy

• Main Authors: CAI,YI-YOU, 蔡易佑
• Other Authors: HUANG,LI-REN
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/85986151835408523918

碩士 === 中州科技大學 === 機械與自動化工程系 === 104 === Advantage of strength to weight ratio, easy forming, heat conduction and magnetic shielding properties widely result in using magnesium alloy for 3C products. In this study, AZ61A Mg-alloy was welded by Tungsten inert gas arc welding (TIG) to investigate the effects of welding parameters on AZ61A Mg-alloy characteristics. Therefore, parts of experiment were conducted with orthogonal arrays of Taguchi method for economically to explore the welding parameters on welding characteristics such as front over melt, end over melt, concave, convex, and crack. Besides, through analysis of variance (ANOVA) and F test of signal to noise (S/N) ratio, the effects of TIG welding parameters such as current type (AC or DC), welding current, welding speed, current efficiency, arc decay time, and shielding gas flow rate on AZ61A weldments characteristics were determined. From this investigation, the relations between AZ61A weldment characteristics and welding parameters of AZ61A via TIG were established. Furthermore, the significant degree of each parameters affected the weldment characteristics were explored, and the optimal combination levels of the welding parameters on front over melt, end over melt, concave, convex, and crack was determined. Moreover, the experimental results could be applied in industrial applications and academic researches.